64963340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249859}}^1$

素因数の和:249881

約数の個数: 24

約数和(自身を含む): 146917680

約数和(自身を除く): 81954340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249859, 499718, 999436, 1249295, 2498590, 3248167, 4997180, 6496334, 12992668, 16240835, 32481670, 64963340]

約数ペア:

[(1, 64963340), (2, 32481670), (4, 16240835), (5, 12992668), (10, 6496334), (13, 4997180), (20, 3248167), (26, 2498590), (52, 1249295), (65, 999436), (130, 499718), (260, 249859)]